Method of eyeglass construction



W. H. SI-DDALL METHOD 0F EYEGLASS CONSTRUCTION Filed July 21, 1925 Patented Oct. 19, 1926.

PATENT oFrlcE.

WILLBUB. n. s mDALL, or ATTLEnoiao, mAssacHUsETTs.

. METHOD or EYEGLAss vcoNsTImeTIolT APPllGation ledl'uly 21, 1925. Serial No. 44,960.

This invention relates to eyeglass construction and more particularly to the construction of eyeglass temple bars of` the non-metallic type.

One of the objects of the invention is to provide a reenforced non-metallic temple bar which is practicaland efficient, capable of affording the wearer long and dependable service. Another object is to provide. such a construction in which the reenforcement is permanently made a part of the nonmetallic temple bar and effectively concealed. Another object is to provide a construction of the above nature which is neat and attractive in appearance. Another object is to provide a practical art of constructing eyeglass temple bars of the above nature which may be carried on conveniently and economically. Other objects will be in part obvious or in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements, arrangements ofgparts and in the several steps and relation and order of each of the same to one or more of the others all as will be illustratively described herein, -and' the scope of the application of which will be indicated in the following claims.

In the accompanyin drawing in which is shown one of the various possible embodiments 'of the mechanical features of this invention,

Figurel is a side elevation of a temple bar in the process of manufacture;4

Figure 2 is a horizontal section ysubstantially along the line 2-2 of Fig. 1; f

Figure 3 isja side elevation of the parts shown in Fig; 2;

Figure 4 1s a top plan View, partially cut away, of the parts sh wn in Figs. 2 and 3 and at alater stage of heprocess, and

Figure 5 is a side elevation-of a completed temple bar.

Similar reference characters refer to similar parts throughout the several views of the drawing.

Referring now to the drawing in detail, there is shown in Figure 1 a tem lebar -member 10 ada'pted to be connecte at its forward end to an eyeglass rim diagrammatically indicated by the dotted lines at 11.'

. This temple bar member 10 is of nonmetallic material such as V"celluloid or other similarmaterials employed the manufacture of eyeglass This non-metallic temple bar member 10 is of substantial thickness and of itself is substantially rigid and not easily flexed to any substantial extent.

As shown in Figure 1, the temple bar 10 in its process of manufacture, is preferably formed as a straight member. Thereafter it is bent 'to the desired curved contour of a temple bar, for example to the contour shown in Figure 5. As explained above, the temple bar is o f itself substantially rigid and not readily flexed but, however, after it has been bent to the' desired curved contour and is in luse there is a tendency for the temple bar to straighten out and lose the original contour given thereto. ,The heat from thehea'd ofthe wearer and strains placed uponthe temple bar in use aid the temple bar in its tendency to thus distort and lose its desired contour. Therefore, in order to -strengthen vthe non-metallic temple bar against such straightening out or distortion, it is reenforced.

After formation of the straight temple bar member as shown in Figure 1, there is formed therein, preferably by drilling, an

axial recess or passage 12 extending from the rear end 1()a of the temple bar prefer.- ably to a pointin advance of the portion thereof which is to be curved., Into this recess is inserted a reenforcing member 13, as shown in Figure 2,- this reenforcing member being preferably a metal wire of any desired cross-section. Preferably this wire 'i member is of the type described in the copending application of George E. Nerney, Serial No. 44,962, filed July 21, 1925, although it is to be understood that this in vention is not limitedl as to the type of reenforcing vwire employed.

vThe end'pjortion 10a of the temple bar is preferably flattened and widened in a vertical direction, so as to provide'afwidened.

and comfortable bearing surface against the head. As is seen by comparison of Figures '2 and 3, this end' portion 10al is preferabl of substantially greaterv width in a vertica direction than `it is in a horizontal direction.

The wire member 413 is of such length that i its rear end 13a is spacedforwardly from the rear end of the temple 4bar member 10.'

In the end portion 10il rearwardly of 'the end 13a of the wire is cut a or slot 14 which maywhe termed substantially diamet- I l rical .since it extends preferably through the temple bar from one side thereof tothe opposite side. This groove 14 extends the wide way of the end portion l0, that is,

from the top side to the bottom side of the temple bar. Preferably the groove is substantially V-shaped as clearly seen in Figure 2.

The Wire member 13 having been inserted in the straight temple bar, and the groove 14 having been formed as by cutting away the material, the end portion 10a about the groove 14 is now softened by suitable means, as by heating or by suitable solvent. The softened material on the two sides of the groove are then pressed inwardly together, as shown in Figure 4, formin la seam 15 along 'which the material mayl e joined by fusing together of the non-metallic material or, if desired, by a suitable cement. The opening in the rear of the temple bar member left' by the insertionof the wire 13 is thus closed in an effective and permanent manner and neatly.

The shaping of the Istraight temple bar member to lthe desired curved contour, for example, as shown in Figure 5, is preferably now done, although if desired, this shaping may be done before the' rear end is closed,'as above described. The shaping is accomplished by suitable softening of the nonmetallic material and then bending the same with the re'enforcing wire13 therein.

It will be seen that the above manner `ofV closing the yopening left by the insertion of the reenforcing wire accomplishes the de- Sired results in a simple, efficient and thorough fashion. There are employed no auxiliaryparts in "the nature of plugs which may become loose and work out of place.'

Moreover, when the materialv at the sides of the V-shaped groove is pressed in together to form the seam 15, the resultant temple bar end is tapered to a smooth roundedupriglit,

edge, as brought out in Figure. 4. This shape is advantageous in permitting con'- venient insertion ofthe temple bar through the hair of the 'wearer and into place.

As many possible embodiments may be made of the mechanical features t f the above invention and as the art herein described might be varied in various parts, all without departing from the Scope of the invention, it is to be understood that all matter here# inabove set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

I claim as my invention: l

1. The herein described art of eyegla temple 'bar construction which consists ,ini-f inserting endwise into the rear portion of a non-metallic temple bar a reenforcing wlre removing from said temple b ar a portlon of the material thereof in back of the rear end y A reenforced of said wire, softening the end portion of the temple'bar, and pressing together the parts of said temple bar about the space left by said removal of material to close. the

non-metallic temple bar a reenforcing wire, e cutting a substantially Vv-shaped groove in.

the rear end of said temple bar, softening the end portion of the temple bar, and squeezing together the walls of said V-shaped groove to close the opening left by the insertion of said reenforelng wire.

3. The herein described art of eyeglass temple bar construction which consists in inserting endwise into the rear'. portion of a.

non-metallic temple bar a reenforcing wire, removing a portion of the material of said temple bar alt the rear end thereof to form Vin said rear enda diametrical groove, sof# tening the rear end of said temple bar, and

forcing toward each other the walls ofl .said ,groove toclose the opening left by the insertion of said Wire.

- 4. The herein described art of eyeglass temple `bar construction which consists in inserting a reenforcing wire axially into a straight non-metallic temple bar member from therear end thereof, removing a portion of the material of said rearend of said temple bar 1member to form therein a sub'- stantially 'transverse groove, softening the rear'end of said templebar member, squeez.

ing to ether-the walls of said groove to close t e opening left by the insertion of said reenforcing wire, and then bending the rear portion of said straight reenforced temple bar 4member to a curved contour.

5.`The .herein described art of eyeglass temple bar -eonstruction which consists in` inserting areenforcingwire axially into a straight non-metallic vtemple bar member from the rearjendthereof, removing a por tion' of the material of /said rear end of said temple .barfmember to form therein a substantiall V-shaped transverse roove, softening t e rear-, end of said temp e bar member, squeezing-,together the Walls of said groove to close-'the opening Aleft by the insertion of said reenfo'rcing wire, and then bending thel 'rear ortion of said straight ar member in a curved ntoir. v 1 In testmoy'whereofflhave signed my name tothisspeciiication .this sixteenth day` 

